It's a 210mm (max. 5" props) frame with a low profile and weight (112g with 4mm arms). It's a little bit advanced to build, because it's very weight optimized, which means it's very small. Watch the video for a detailed review of the frame and feel free to leave comments if you want to know anything.
Thanks to Mac and Kristof who sent me this frame to review.
Shop: shop.rotoracer.eu/category/frames-2/rotoracer-rr210